Answer:
the United States did not enter the war until after the Japanese bombed the American fleet in Pearl Harbor, Hawaii, on December 7, 1941.
Explanation:
True. If that is what you were asking for?
A. Unrestricted Submarine Warfare.
This caused Germans to attack vessels that carried US citizens, bringing the US into the war.
Answer:
there were 5 on three of the planes, and four on the fourth